The effects of silica fume and fly ash on the scaling resistance and flexural strength of pavement concretes
Küçük Resim Yok
Tarih
2011
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The purpose of this study is to investigate the effects of Silica Fume (SF) and Fly Ash (FA) additives on the frost salt scaling resistance and flexural strength properties of pavement concrete. An attempt is also made to attain a more durable and higher strength concrete by a suitable combination of Ordinary Portland Cement (OPC), SF and FA. SF and FA are used as cement replacement in proportions of 0, 5, 10% and 0, 5, 10, 15% by weight respectively. Flexural strength is tested after 7, 28 and 91 days of the lime saturated water curing period. The experimental results indicate that using FA only decreases while SF only slightly increases 28-days flexural strength. On the other hand, using SF and FA together shows relatively more strength gain. Among all those tested, maximum 28 days flexural strength of 4.53 MPa is obtained for the mix proportions of 85% OPC + 10% FA and 5% SF. SF significantly decreases the amount of liquid absorption by capillary suction and has a significant effect on the scaling resistance. In addition, all the ternary mixtures showes better scaling resistance than the control mixture with 100% OPC. © 2011 Lavoisier, Paris.
Açıklama
Anahtar Kelimeler
Concrete pavement, Durability, Flexural strength, Fly ash, Frost and deicing salt resistance, Silica fume, Concrete pavement, Durability, Flexural strength, Fly ash, Frost and deicing salt resistance, Silica fume
Kaynak
Road Materials and Pavement Design
WoS Q Değeri
Q3
Scopus Q Değeri
Q1
Cilt
12
Sayı
1
